Vanna AI

Vanna is an open-source Python framework that turns natural language into accurate SQL. Point it at any database — Postgres, MySQL, Snowflake, BigQuery, SQLite — and any LLM provider (OpenAI, Anthropic, Gemini, Ollama), and users can query company data in plain English without writing a line of SQL. Vanna 2.0 adds Tool Memory: every successful query is stored in a vector database, so the agent learns your schema, business logic and query patterns over time instead of relying on manual training. Multi-turn conversation, per-user access control, chart generation and custom tools are built into the framework. Self-host the OSS core for free, or pay for the hosted cloud layer with observability, audit logs, file storage and SSO. Built for data teams and developers who want to embed BI-grade chat into their own products without vendor lock-in.